I think the edges are glued or hidden so that there shouldn't be any fraying.. but check out this site and tutorial.. Might answer your questions and let everyone know what we are talking about..
http://bronzewombat.blogspot.com/200...patchwork.html

I think the edges are glued or hidden so that there shouldn't be any fraying.. but check out this site and tutorial.. Might answer your questions and let everyone know what we are talking about..
http://bronzewombat.blogspot.com/200...patchwork.html